Ceiling Fixture Size Calculator
Home & Decorative

Ceiling Fixture Size Calculator

Find the ideal diameter for ceiling fixtures, fans, and chandeliers. Uses proven designer rules of thumb for flush mounts, semi-flush, pendants, fans, and chandeliers.
Room Dimensions
Room Length 14 ft
Room Width 12 ft
Ceiling Height 9 ft
Table / Furniture Width 36 in (dining only)
Number of Fixtures
Room view from above
Recommended Fixture Diameter
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The calculators and tools on LightingCalc.lighting are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. LightingCalc.lighting makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.